Dragon inside X 33

Just got an idea to put the Dragon capsule inside the X 33. Surprisingly, it's not too big. The fuel tank for the NTR will have to be re shaped probably in the form of the X 33 itself. The amount of fuel needed for the NTR is only about 30 percent the volume of the X 33's interior. So there should be plenty of room for the full assembly to go inside of the X 33. That raises the question of sufficient volume remaining for the fuel tanks. A second look at the Dragon capsule reassures me that this won't be a problem.